Which expression is equivalent to 15x^-3z^5/3x^7z^-5

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For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?